[Bugs] [Bug 1348095] GlusterFS memory leak on bricks reconnection

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1348095

Joonas Vilenius <rhbugzilla at ajaton.net> changed:

           What    |Removed                     |Added
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                 CC|                            |rhbugzilla at ajaton.net



--- Comment #2 from Joonas Vilenius <rhbugzilla at ajaton.net> ---
We've been using GlusterFS as a storage backend for OpenStack (Kilo) Cinder on
CentOS 7 and have experienced quite a bit of memory leak issues starting with
3.6.9. We then upgraded to 3.7.11 in which the leak was roughly 10x less but
still very much there as can be seen from these graphs
http://ajaton.net/glusterfs/ - this unfortunately causes libvirtd to run out of
memory over the time (hours/days) which again causes other issues. Our journey
to 3.8.0 faced other major difficulties (bug filed 1348935) so we are back in
3.7.11. 

We can reproduce the issue fastest by simply creating an instance and volume
and then keep attaching/detaching the volume to the instance until libvirtd
dies. It is also enough to just have the mount there to have the leak visible.
We have only observed so far the memory consumption of libvirtd (VmSize and
VmRSS as graphed on above link).

I'm just adding the info here as was discussed on IRC, please let me know if
there is anything i can do to help debugging the issue!

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